Fecha de publicación: 29/12/2022 Fuente: WIPO (eseential oils OR extracts) A training apparatus includes a feature extraction unit that extracts feature vector data from behavior data of each date and time, a reference point extraction unit that performs, for each date and time, processing of calculating a difference between feature vector data of certain date and time and each of one or more pieces of feature vector data in past within a predetermined period from the date and time, and extracting one or more pieces of difference vector data corresponding to the feature vector data of the date and time, and a state estimation model training unit that trains a state estimation model using feature vector data of each date and time, difference vector data, and state information.